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Date:   Fri, 12 Feb 2021 12:39:17 -0600
From:   "Gustavo A. R. Silva" <gustavoars@kernel.org>
To:     Sunil Goutham <sgoutham@marvell.com>,
        Linu Cherian <lcherian@marvell.com>,
        Geetha sowjanya <gakula@marvell.com>,
        Jerin Jacob <jerinj@marvell.com>,
        hariprasad <hkelam@marvell.com>,
        Subbaraya Sundeep <sbhatta@marvell.com>,
        "David S. Miller" <davem@davemloft.net>,
        Jakub Kicinski <kuba@kernel.org>
Cc:     netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
        "Gustavo A. R. Silva" <gustavoars@kernel.org>
Subject: [bug report] octeontx2-af: cn10k: Uninitialized variables
Message-ID: <20210212183917.GA279621@embeddedor>
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Hi,

Variables cgx_id and lmac_id are being used uninitialized at lines 731
and 733 in the following function:

723 static int rvu_cgx_config_intlbk(struct rvu *rvu, u16 pcifunc, bool en)
724 {
725         struct mac_ops *mac_ops;
726         u8 cgx_id, lmac_id;
727
728         if (!is_cgx_config_permitted(rvu, pcifunc))
729                 return -EPERM;
730
731         mac_ops = get_mac_ops(rvu_cgx_pdata(cgx_id, rvu));
732
733         return mac_ops->mac_lmac_intl_lbk(rvu_cgx_pdata(cgx_id, rvu),
734                                           lmac_id, en);
735 }

This bug was introduced by commit 3ad3f8f93c81 ("octeontx2-af: cn10k: MAC internal loopback support")

What's the right solution for this?

Thanks
--
Gustavo